Baby&#39;s nursing bottle heater



' May 11, 1937. A. T. HARVEY 2,079,611

BABYS NURSING BOTTLE HEATER 7 Filed Sept. 23, 1936 2 Sheets-Sheet 1 Fi .1. Fig.5. 28-47? as 3\/ 22 1 17 I I 2 w 4 4, i g @AB 1 2 a,

Z quunnnununuuuuuun mum! g /4 Z Z Z ,/.2 4 4 4 a g A9 I 1 g 20 2 i Z I8 2/ i 2 as I May 11, 1937; A. T. HARVEY BABY'S NURSING BOTTLE HEATER 2 Sheets-Sheet 2 FiledSept. 23. 1936 Fig. 5.

*lllll'f [NVENTUH Patented May 11, 1931 PATENT oFFicE 12,019,011 names meme nor'rnn nnnrn Alexander Harvey, Muskogee, Okla.

Application September 23, 1936, Se

2 Claims. (01. 21 9 19) The invention relates to a means by which a baby's nursing bottle and its' contents may be heated within an, automobile, the energy being supplied bythe automotive electric system.'

The invention isparticularly applicable among motorists making trips with small babies, whose regular hours of feeding. make it necessary to .heat said bottle and its contents while traveling, or at such times when proper facilities for heating same are not otherwise available.

Another object of the invention is to provide a means by which automobile campers'with small babiesmay heat the babys nursing bottle and its contents without exposing same to the smoke and ashes of an open fire.

. In the accompanying drawings: Fig. 1 shows a cut-away side view of the heater with the usual babys nursing bottle.

Fig. 2 is a view of the bottom of the heater 0 showing the switch and the binding post in detail.

Fig. 3 is a cut-away. sectional view looking outward through the binding post and the switch lever contact showing the connections of the same- -vto the heating element;

Fig. 4 is a view of the switch lever stops looking away from the pcint of pivot of the switch lever showing a cross-section of the shell bottom and a cross-section of the switch lever.

' Fig. 5 i s a view of the heating unit before it is 0 rolled into cylindrical form.

I Fig. 6 is a diagrammatic representation of the essential parts of the heater and its connection to the automotive electric system.

' In the figures, and best shown in Fig. 1 the 5 cylindrical heater shell 10, provided with a bot- I tom ll, isattached to the dashboard of an automobile by the clamp 42, which is provided with a clamping screw l3, and a pad ll to prevent scratching of the dashboard. The heater is attached to the electric system of said automobile by the flexible conductor I5, and is turned "on" andffoil" by the switch lever Hi. The heating element I! by the aid of the rivets I8 is attached to the inner periphery of a still composition sup- 5 porting cylinder IQ of good thermal and electrical insulating qualities, which is separated from the heater shell It by a layer of sheet asbestos 20, thereby minimizing heat transmission to the atmosphere, and also serving as an electrical inn suiation between theends of the heating element rivets l8 and the metallic heater shell Hi.

In Fig. 5 the heating unit before it is rolled into cylindrical form is shown in detail. The heating element I1 is wound in zig-zag fashion 5 around and under the heads of the rivets ll,

the shell bottom I l.

which are attached to the still. composition supporting sheet I9. The said element I]. terminates in the leads 2| and 22, which are. secured to the stiff composition supporting sheet l9 by passing to the back side of said sheet through the holes 23 and 24, and thence to the front side of said sheet through the holes 25 and 26 respectively. When the unit is rolled into a cylinder, the edges 21 and 28 meet as shown in Fig. 3.

Referring to Fig. 3, the heating element lead 22 is fastened underthe head 3| of the threaded binding post 29, which passes through the center of an aperture 32 in the shell bottom H. The aperture 32 being of larger diameter than the diameter of the binding post 29, .permits the two of being insulated from each other. The head 3| of the binding post 29 is insulated from the shellbottom II by the bottom lining disc 33 of insulating material, and serving also to hold the binding post 29 in the center of the aperture 32. The binding .post 29 is further insulated from the shell bottom II by a fibre insulating washer The flexible conductor 15 is fastened to the binding post 29' between two metallic washers 35 and 36,and the entire binding post assembly is held in place by the nut 31. The heating element lead 2| is fastened under the head 38 of the sulated from the shell bottom II by the bottom lining disc 33 and the fibre washer 4| in a similar fashion as was the binding post 29 insulated from The switch lever contact containing an internal thread is screwed onto theend of the contact screw 39 thereby holding the assembly in place. The protruding end of the contact screw 39 is ground off flush with the surface of the switch lever contact 30.

In Fig. -2 the switch is shown in detail. The switch lever l6 of good electrical conducting material is attached and pivoted to the metallic shell bottom H by the rivet 42. The said lever is in an "on position when directly over and v resting on the contact 30. The said lever is in an ofi position when as shown in dotted form.

Fig. 4 is attached to the shell bottom II.

The flexible conductor l5 best shown in Fig. 1 terminates in the metallic eyelet 45 which is placed on one of the terminals of the ammeter of the a :omdtive electric system.

l0 lead 22 into the heating element l'l.

' rent leaves the heating element il through the lead 2! and passes successively through the contact screw 39, the contact ll into the switch lever 16, thence to the shell bottom H, the shell 15 in, and the clamp l2 and the clamping screw ii to the metallic dashboard oi the automobile which is grounded, thereby completing the circult.

I wish it to be understood that rdo not desire to be limited to the exact details. oi construction shown and described herein, tor obvious modifications may occur to a person sldlled in this field.

I claim:

1. A combination for the heating of a baby's nursing bottle and its contents with energy sup- The curplied from an automotive electric .systemy tcom .v

prising a casing fitted with a clamp attachable to the dashboard of said automobile, a resistance heating unit contained therein and insulated both thermally and electrically from the casing, one terminal of said heating unit connected to the ungrounded side of said electric system, and a single pole switchoperative to connect the remaining terminal of said heating unit to the grounded side of said electric system thereby completing theelectriccircuit. i

2. A combination for the heating oi a baby's nursing bottle and its contents with energy supplied from an automotive electric system,

- comprising a casing fitted with a clamp attachable to the dashboard of said automobile, a resistance heating unit contained therein, and a switch operative to connect said heating unit to said electric system; said heating unit being composed of a wire heating element Wound in zlg-zag fashion around and under the heads of rivets secured'to the inner periphery of a stiii composition'supporting cylinder of good electric and thermal insulating qualities.

ALEXANDER T. VE'Y. 

